From patchwork Thu Nov 18 18:12:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rob Herring (Arm)" X-Patchwork-Id: 12627455 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2DA7AC433EF for ; Thu, 18 Nov 2021 18:12:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E64961A56 for ; Thu, 18 Nov 2021 18:12:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231915AbhKRSPP (ORCPT ); Thu, 18 Nov 2021 13:15:15 -0500 Received: from mail-oi1-f181.google.com ([209.85.167.181]:36547 "EHLO mail-oi1-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231467AbhKRSPP (ORCPT ); Thu, 18 Nov 2021 13:15:15 -0500 Received: by mail-oi1-f181.google.com with SMTP id t23so16084581oiw.3; Thu, 18 Nov 2021 10:12:15 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZWdr6e4SiKEwyVeW7jig9nB/OfdKCWQxGTViJArBtNk=; b=Iad+sKd+t5EJ7SEr0ju4oISmk39DnvwklXYlV/16ZFAAwhyh+CG/hvYfxE3TOaT+Qg BcA1bzH7sAH8UGOVvxIZbgAmOHDr1vaeY610ar+/D8832ZkWlyzS1NoO1CkbAIgOQPB4 Ks03Kv6aDPYs89mAqIq3uwmdhRGUgOii0RxYPvJp+aszzuLcRTcK/6VwnIMHxurXxpDy w3xrYXyW/4upgqV0WsSXSYjTQvr/no+KLI/djugdvTRde/gYFT5iQCboZm+hUyuO+rZW 419T3vV013XRqc5pVOJF9yJLWnczyMFeii83cOdyPca+KeXqd0NiHTBzKsTcXN8Zk4BO 7yJw== X-Gm-Message-State: AOAM5331djO7LfGJWCxe6S/zyECHVoUiOBgfyk6RLdu+IfmaQ46cDZeu /7FlaWFTOmKVp60aqD85r4o07W+Edw== X-Google-Smtp-Source: ABdhPJyMTHkFTgzUFk6reybeEUonyuO0UVS3U62hmM+wu1p7V7zF8Vjh3UeI1rSTPyE7qMTSz5OFmg== X-Received: by 2002:aca:7c3:: with SMTP id 186mr9614934oih.60.1637259134717; Thu, 18 Nov 2021 10:12:14 -0800 (PST) Received: from xps15.herring.priv (66-90-148-213.dyn.grandenetworks.net. [66.90.148.213]) by smtp.googlemail.com with ESMTPSA id n20sm99339ooe.7.2021.11.18.10.12.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Nov 2021 10:12:14 -0800 (PST) From: Rob Herring To: Benjamin Herrenschmidt , Frank Rowand , John Crispin , Michael Ellerman , Paul Mackerras , Thomas Bogendoerfer Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/3] of/fdt: Rework early FDT scanning functions Date: Thu, 18 Nov 2021 12:12:09 -0600 Message-Id: <20211118181213.1433346-1-robh@kernel.org> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org The early FDT scanning functions use of_scan_flat_dt() which implements its own node walking method. This function predates libfdt and is an unnecessary indirection. This series reworks early_init_dt_scan_chosen(), early_init_dt_scan_root(), and early_init_dt_scan_memory() to be called directly and use libfdt calls. Ultimately, I want to remove of_scan_flat_dt(). Most of the remaining of_scan_flat_dt() users are in powerpc. Rob Rob Herring (3): of/fdt: Rework early_init_dt_scan_chosen() to call directly of/fdt: Rework early_init_dt_scan_root() to call directly of/fdt: Rework early_init_dt_scan_memory() to call directly arch/mips/ralink/of.c | 16 +--- arch/powerpc/kernel/prom.c | 22 ++--- arch/powerpc/mm/nohash/kaslr_booke.c | 4 +- drivers/of/fdt.c | 121 ++++++++++++++------------- include/linux/of_fdt.h | 9 +- 5 files changed, 79 insertions(+), 93 deletions(-)